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GPS with a global, all-weather, continuous real-time three-dimensional navigation and positioning capabilities, has a broad application value and development potential. GPS receiver with C / A code has advantage of cheap, small, easy to carry, from the results of position by C / A code GPS receiver outputting, researching the C / A code GPS receiver static positioning accuracy, has important practical...
With rapid development of modern intelligent traffic management, the measuring speed radar becomes an important device. Using Doppler principle, speed can be measured by obtaining frequency deviation signal of moving target. Traditional measuring speed method uses analog filter whose measuring accuracy is low and measuring speed is slow, so it's difficult to meet the requirements of modern intelligent...
By using BP artificial nerve network's error reversion transmission. Summing up various data of comprehensive logging can solve the problem of low accurate rate for identifying oil, gas, water zones. The software provides nerve network reservoir interpretation model by studying and training the initial data of tested oil. Practice proves the overall coincidence rate of interpretation reaches 97%....
By applying principle of computer artificial nerve network's and arithmetic of error reversion transmission, and by making parameters of gas logging quantified and standardized , it can establish the interpretation model of artificial nerve network, of which the inputting model sample is based on many parameters. Summing up various data of comprehensive logging can solve the problems of low accurate...
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